Secondary battery.



A. M. SHERER.

SEQONDARY BATTERY.

APPLICATION FILED MAR. 25, 1912.

1,071,859., Patented Aug. 26, 1913.

a SHEETS-QHEET 1.

Inventor:

0+ 305% VLLMJLL Atty A. M. SHERER.

SECONDARY BATTERY.

PPLIOATION FILED MAR.25,1912

' Patented Aug. 26, 1913.

3 SHEETS-SHEET 2.

D1 ventor:

ksi #03 Mm Atty iii-

jripplivatien film! Marsh I115, S2222! l-Io. $86,612.

To whom may iiifflilc I 5 Be it known that I, lhi'i'i'iiiic lain/ 0N igroups of ribs or laminations Fig. 2 is a Sui: mi; 2), uiiizcn oi theUnited States, 1'0: Eng!mental y View of a grid showing a11- sc /mfg ofthe squar' shown. with their siding at Phiizide lphia in the Count 01')Hlfil b!I'ifiiilglllfill!) of ribs. Fig. 3 is an (:11- i Phihuiviphiziand State of Pfillnfiflhffiflizl, :ii'g'cd \"iiW mi :1 pmrtiou (if Figz. 1. Fig. 4.- have. inwni'ed cei'iain Eli-WV and usir'i ui .ima(iv'lail sectimmi View taken iiauiaiei'seiy movements: infiwcumiiu'y131MB of which group of ribs showing the smile iniehefuiinwin i' BCiiiSfifiOli. i (SOIHKWZiiPd together. Fig 5 is a si1ni-This iijn'eiltimi ieinii to grids fin zufmii 3w in which the ribs amshown s pzimniaiimaq of aiiie Plant; 'tvpa in which Hm rm ixmn eachother. Figs. 6 and 6 are posiiiiwe and] mgmtiw 01cm: same made of IfiiWr; of iiifivmni COHHi'IlIC'iI-iflnfl adapted for lead from which heactii'c iiimizei'izii 5 in} nvgz z iiiw grids. 1133s.? and 8,:11'6formed by the charging cur-1i pa? Immitm'y ViiWS oi, ifiliOlISHKMiiiifiiiOliS (if "li'mn i113 posiiii 0 the jnieg'ntii'fp11 ribg'i'miping. 15 through the electmi vic and EiHHBi UYfl J f' in'iiizu'reference cinuaci'mi; 1'0 empinyed. i0 grid (if this inveniimi 3Sdisi'iiiguiximd f1 in designate murwspcnding parts hmughflint type 01grid in which he lifiiiYD i imi the 'vimvs.

i I I I I i i Liie frame of the grin whirl; in the present iHh'iiUHQ isxiii um mmmgnhuand having i5 iiiil gi'mli bar's: iwin: 0;. main ribs 1'integrally minim'i'mi wii'le, the Eli), top and bottom mm of ii: 'i mmu.I 1

tei-izii in paste 01' pmwivr fmrm is; minim iicfsri'ing t0 iill"draining-1H, A icsignates wily appiied in His IHHHGHFUS w. 1 .il1(\- "i111% main I'iiis 1V i11ier- Witi iliil oiiimat sur'i' an angle as toform squares 2 in Wiiii'h are iis i-tieii groiipsni 89 A 1-1 i-iiiciunvy -cuihiuz'y 'i'iiibj or .iazninaiinm i, but it is to Fizz-1%, and :i menude -i00diin1i the we s 01' 11min ribs 1 iuces 1011 l'ziiiiii iiim aim(1:121 he so disposed as in form any oiher 315m; g id th t is abginiygsiiial figuwr; than square and the num- Smzuyj, imaszrf.) pm.

4 ion in) prov jectiwnabie on :xccmmt short-Cirauitingx. bar of grmips0i Rccgmdu'ry ribs or Iaminaiii 'mi'yiug' 011i: the invention, the grid110215 W111 miriccmchngi v.

manic in tin-w fungi of 3V skeleton frame 0f shown more paiiicuim'iy inFig. 3, (he l'vi-iangz'iiiai' 01' Milk? shape mui pz-uvi i fi wvnndznyribs 4% are coiivmii'iicail m winged Vii/h dizigi'miii mother suitably:nimngwi in Gifl'i] group and are triangular in shape 35 wsias, rib-3:mburs disfmsed in ii'ii'vz'secting in such utimi 0 011011 Mimi that {heapexes 90 su kidding square r mixer pa 5 iie in diameii'icai iines andiha ends of SIHM'LS in whiuh an dibpwsed c0iniim v svvondury ribs orluminzitions sire in- (1 i-iii-s m fiiliiziilii, fin-in, the, Said ribsivg miiy conneciuci with the main ribs 1.

being :uzipmi in groups that me iffiifid The groups cf ribs an? sepamimifrom each Mm by spaces thimipgii "\iilil'il Oiilti' by (iingmuli spaces6 so that he groups iim 'EiQiiiOif I? van freely circuinte. This 1 arewe in expand im'vai'dly from His sides iisii1iQiiizn an: 21;"11101'1i mm 0? rim of Hm square in which they are confined,

ERHUWS 01?? creipanmm tOi'ifiii'ii :1 i'icni'i-ni paint andii'iirtiimnmrc these diagonai openings i other F gure in i'i'lncii iiiiczaiim'v the iikwciiwlj'te 0 fireeiy cli'ciiiaie. H; M p ii; are! isms 1and m 1 wzii be noted iimi the ii'eniitmst park of the 00 12mm iiisis'izmiiiei'fi aiim-aii :1 maxiscfiiiuns mill ihe secondary ribs arecompacted e guns-9d ii-1*, time eiocirm; he main ribs iii oppnsii'gsides of the A mm Si that (the '5? mini of the Miter in siaced l@izi -qin; :AD; in this mps; of SBCUTZfi- .SiiiCi-s i/he main ribMiEZNQE-E'fifii. thus they 7.16

I? Y2 SEE have a counteractive or equalizing etlect in expansion so thatthe tendency to buckle is minimized. The concentric ribs of each groupmay be integrally connected by webs 7, as shown in Fig.4, or they may beseparated by spaces 8, as shown in Fig. In the latter asc, theelectrolyte can mo freely circulate, but in both cases a larg surface ofthe grid is exposed to the elec" ,sectiiig main ribs 2, whereas in Fig.3, each group of concentric secondary ribs is intogrally connected withthe same side of the square.

Grids designed as above described are made of commercially pure lead andare cast, stamped, pressed or otherwise formed in one piece, and byreason of the peculiar formation, the structure obtained iscomparatively rigid and light, although a large surface is provided forthe chemical action to take place thereon.

The negative plates are designed with the same arrangement of groupingsof secondary ribs. as is evident from Figs. 6 and o but it is foundpreferable to separate the centers of the groups by either radial slotsor openings 9, as shown in Fig. 6, or by a single opening 10, as shownin Fig. 6 the advantage of this construction for the negative platebeing that the acid can better pereolate through the plate, thus givingconvent *ation of the electrolyte in the pores oi the plate uniformly inall the stagcsof charging and discharging. This gives a higher capacityfor a given amount of lead and also decreases the weight of the cell.Figs. (3 and 6, it will be understood, rep resent each but a fragmentaryportion of one half of a negative plate, the portions shown in the twoviews being taken from op positc halves of different plates. Theopenings 9 and 10 are designed to be central in their respective plates,so that the inner edge of each figure corresponds to a break through themiddle of the plate thereby represented in part, and a mere, reversedduplication of the part illust ated would give a practially full view ofthe cent-er of the t ,negative plate in each instance.

other and designed for rectangular group ing. in Fig. 8, the ribs 12,which are sepa-- rated from each other by s aces 13, have one or moresides cm'rugateu, as shown at 14-, so as to increase the surface exposedto the electrolyte. The ribs 11 and 12 of these grids are connected withthe main ribs 1.

It will be understood that the active material will be chemically formedon the grids by the current passing through the electrolyte in which thegrids are placed and consc quently said material is an integral part ofthe grid, so that the internal resistance of the cell or battery isconsiderably lower than it is with those plates in. which the paste orpowder that forms the active material is mechanically applied.

By reason of the specific disposition and construction of the secondaryribs, expansion takes place in such a manner that buckling minimized Theexpansion is localized and confined to individual. sections which arethe squares of the grid and in these squares the secondary ribs expandinwardly toward the center, and as the groups of secondary ribs areisolated or separated from each other, this expansion does not produce abuckling action. The grid, as herein constructed, is furthercharacterized by incrtased etliciency and it also permits of a rapidcirculation and a thorough distribution of electrolytes.

Having thusdescribed the invention, what I claim as new, is

1. A storage battery grid comprising a frame provided with main ribs orwebs, and 1 0 a plurality of groups of concentric secondary ribs havingtheir ends connected with the main ribs and their intermediate portionstree therefrom, the groups of ribs being disposed about a common pointand the 105 ribs ot' the groups being free to expand toward snch' point.

2. A storage battery grid comprising a finale provided with main ribs orwebs, a plurality of groups of concentric secondary 11o ribs havingtheir ends connected with the main ribs and their intermediate portionsfree therefrom, the groups of ribs being disposed about a common pointand the ribs of the groups being free to expand toward 115 such point.and connecting \vebs between" adjacent ribs of each group.

3. A storage battery grid comprising a frame having webs all lying inthe same plane, synnnctricat groups of separate con- 120 centricallyarranged ribs on opposite sides of the webs and having their endsintegrally connected with the latter and their intermediate portionsfree to expand away from the webs in a direction perpendicular 125thereto.

4. A' storage battery grid comprising a frame having webs or main ribsdefining polygonal spaces, and a plmrality of groups 'pF'Ebiurentricallyarranged ribs in each space the groups of ribs being separated from eachother to permit the ribs to ebpend toward a central point in each space.

5. A storage battery grid comprising at frame, Webs or main ribsconnected together and defining polygonal spaces, and a phr rality ofgroups of concentrically arranged. i -shaped secondary ribs extendingtoward the center of the said spaces and having their endsconneoted withthe main ribs and their epexes spaced therefrom 6. A storage batterygrid comprising a frame, Websor main ribs connected together anddefining polygonal spaces, and a, pinrelit-y of groups ofconcentrieaiiyarranged ileheped seconder Y ribs having their ends connected with themain ribs and their epexes spaced therefrom, said groups of ribs beingspeeed from each other.

*2. A storage battery grid having 11min ribs dividing it intosubstantially square sgaeees, arid symmetrically disposed groups ofseparate concentric Vshaped secondary ribs the ends of which restonopposite sides of the main ribs the epexes of the secondary ribs on eachmain rib beingdisposed in e line extending transversely to each main riband st: "1 in short of the center of the square space theretoappertaining.

8. A grid comprisiig e frame having 11min ribs or'webs formingpoiygons,e plurality of separate concentric ribs on the sides of the polygons andextending toward the center thereof from such sides, the-groups ofsecondary ribs being separated by diagonal spaces Whereiiy the seconderyribs ere free to expand to the centers of the poly gens. 1

, In" testimony whereof I signature in presence oi two Witnesses.

ARTHUR H SEER-ER. Witnesses MCZIASB FOX,

A. H. MARI

